I found this and it worked: https://www.samchowdesigns.com/blog/how-to-embed-pdf-on-squarespace-tutorial
If the PDF doesn’t contain information that’s super relevant to most of your audience, don’t take up precious screen space by embedding it. Instead, include a text link that users can click on to go to the PDF on a separate page. For example: “Click here for our full tasting menu.” Linking to the PDF is also a good option if people need to download the PDF. For example, you might link to a PDF of an application form that needs to be filled out and sent by mail.
Linking to a PDF on Squarespace is super easy. All you have to do is:
Add a text block
Highlight the text you want to turn into a link
Choose the link icon
A small pop-up will open. Click on the gear icon
Click “File” to upload new file or choose an existing file
Save!